Hair dryer



FIG. 1 is a front-elevational view of a hair dryer showing my new design;

FIG. 2 is a rear-elevational view thereof;

FIG. 3 is a top-plan view thereof;

FIG. 4 is a bottom-plan view thereof;

FIG. 5 is a side elevational view thereof which is a mirror image of the opposite side; and,

FIG. 6 is a perspective view thereof. 

The ornamental design for a hair dryer, as shown and described. 